“It were good to know how much hay an acre of every sort will bear; how many cattle the same weight of each sort of hay will feed and fatten; what quantity of grain and other commodities the same acre will bear in one, three or seven years; unto what use each soil is proper; all which particulars I call intrinsic value, for there is also another value merely accidental or extrinsic.” KnowsYearsUseValuesThreeKnow HowBearsWeightSevenSoilQuantityGrainCommoditySeven YearsCattleAcresHayIntrinsic Value Author:William Petty
“Without the knowledge of the true number of the people, as a principle, the whole scope and use of keeping bills of birth and burials is impaired; wherefore by laborious conjectures and calculations to deduce the number of people from the births and burials, may be ingenious, but very preposterous.” PeopleMayWholeUseNumbersPrinciplesBirthBillsScopeCalculationsIngeniousBurialConjecture Book:The Economic Writings of Sir William Petty: Together with the Observations Upon the Bills of Mortality More Probably by John Graunt Source: The Economic Writings of Sir William Petty: Together with the Observations Upon the Bills of Mortality More Probably by John Graunt
“The method I take to do this is not yet very usual; for instead of using only comparative and superlative Words, and intellectual Arguments, I have taken the course (as a Specimen of the Political Arithmetic I have long aimed at) to express myself in Terms of Number, Weight, or Measure; to use only Arguments of Sense, and to consider only such Causes, as have visible Foundations in Nature.” LongUseSciencePoliticalCoursesCausesTermNatureNumbersTakenIntellectualArgumentWeightMethodFoundationVisibleUsualArithmeticSuperlatives Author:William Petty
